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esp32-core: Fix BOARD_CLOCK_FREQUENCY

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Tested on qemu.

I left CONFIG_ESP32CORE_RUN_IRAM case and the "Don't ask me" comment
as it is because I don't understand it or can test it.
This commit is contained in:
YAMAMOTO Takashi
2020-03-02 15:48:20 +09:00
committed by Alin Jerpelea
parent c365e0a88f
commit c0762fe652
1 changed files with 11 additions and 1 deletions
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boards/xtensa/esp32/esp32-core/include/board.h
+11 -1
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@@ -63,10 +63,20 @@
* Don't ask me for an explanation. * Don't ask me for an explanation.
*/ */
/* Note: The bootloader (esp-idf bootloader.bin) configures:
*
* - CPU frequency to 80MHz
* - The XTAL frequency according to the SDK config CONFIG_ESP32_XTAL_FREQ,
* which is 40MHz by default.
*
* Reference:
* https://github.com/espressif/esp-idf/blob/6fd855ab8d00d23bad4660216bc2122c2285d5be/components/bootloader_support/src/bootloader_clock.c#L38-L62
*/
#ifdef CONFIG_ESP32CORE_RUN_IRAM #ifdef CONFIG_ESP32CORE_RUN_IRAM
# define BOARD_CLOCK_FREQUENCY (2 * BOARD_XTAL_FREQUENCY) # define BOARD_CLOCK_FREQUENCY (2 * BOARD_XTAL_FREQUENCY)
#else #else
# define BOARD_CLOCK_FREQUENCY BOARD_XTAL_FREQUENCY # define BOARD_CLOCK_FREQUENCY 80000000
#endif #endif
#endif /* __BOARDS_XTENSA_ESP32_ESP32_CORE_INCLUDE_BOARD_H */ #endif /* __BOARDS_XTENSA_ESP32_ESP32_CORE_INCLUDE_BOARD_H */